使用sci-kit学习时如何解决此“ line_search_wolfe2”错误？

Question

尝试运行实现Sci-Kit Learn的Python脚本时出现错误。 这是我的代码：

import matplotlib.pyplot as plt
from sklearn import datasets
from sklearn import svm

digits = datasets.load_digits()
print (digits.data)
print (digits.target)
print (digits.images[0])

clf = svm.SVC(gamma=0.001, C=100)

x, y = digits.data[:-1], digits.target[:-1]

这是我在终端中运行“ python scidigits.py”时遇到的错误：

Traceback (most recent call last):
  File "Practice.py", line 6, in <module>
    from sklearn import svm
  File "/home/jdoe/.local/lib/python2.6/site-packages/sklearn/svm/__init__.py", line 13, in <module>
from .classes import SVC, NuSVC, SVR, NuSVR, OneClassSVM, LinearSVC, \
  File "/home/jdoe/.local/lib/python2.6/site-packages/sklearn/svm/classes.py", line 6, in <module>
from ..linear_model.base import LinearClassifierMixin, SparseCoefMixin, \
  File "/home/jdoe/.local/lib/python2.6/site-packages/sklearn/linear_model/__init__.py", line 25, in <module>
from .logistic import (LogisticRegression, LogisticRegressionCV,
  File "/home/jdoe/.local/lib/python2.6/site-packages/sklearn/linear_model/logistic.py", line 25, in <module>
from ..utils.optimize import newton_cg
  File "/home/jdoe/.local/lib/python2.6/site-packages/sklearn/utils/optimize.py", line 18, in <module>
from scipy.optimize.linesearch import line_search_wolfe2, line_search_wolfe1
ImportError: cannot import name line_search_wolfe2

有人可以阐明这个问题吗？

Answer 1

我猜这是一个版本/弃用问题。

因此，您应该更新scikit-learn软件包。